h4,p,span,del{
	background-color: green;
	width: 300px;
	height: 200px;
	margin: 10px auto;
	text-align: center;
}
input{
	width: 200px;
	height: 50px;
	text-align: center;
	margin: auto;
}
a{
	display: block;    /* 转换为块元素 */
	width: 200px;
	height: 300px;
	border: 1px solid red;
}